Wheel-hub.



PATENTED MAY 17, 1904.

J. ROSENBERG.

WHEEL HUB.

APPLICIATION FILED 0OT.10, 1903.

H0 MODEL.

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Patented May 17, 1904.

UNITED STATES PATENT OFFICE.

JOSEPH ROSENBERG, OF CHICAGO, ILLINO1S.'

.WHEEL-HUB.

SPECIFICATION forming part of Letters Patent No. 760,252, dated May 17,1904. Application filed October 10, 1903. Serial No. 176,577. .(Nomodel.)

To all whom it may concern.

Wheel-hubs haveheretofore been constructed of either wood or metal. Theformer material has been employed chiefly because of its compressibilityand spoke-holding tenacity and also because of its cheapness and light.

weight. Metal hubs have found favor because of their durability andstrength. Both wooden and metal hubs have been open to seriousobjections, however, the former because of its liability to crack andloosen the spokes when exposed to the weather and the latter because ofthe absence of elasticity and inherent spoke-retaining qualities.

The object of my invention is to secure the advantages of both wood andmetal as hub m aterial without retaining their disadvantages bycombining the two in a novel manner, so as to obtain great strength,lightness, comparative permanency of the hub as a spokeretainer,metal-proof against the actions of the weather, &c.

To this end my invention consists in a hub constructed out of a toughcompressible material, such as Wood, into the spoke-apertures of whichthe spokes may be tightly wedged, and an outer coat or shell for saidhub made out of rigid and comparatively unyielding ma terial, such asiron, steel, and other metals.

The invention further consists in a hub having expansible hub-aperturesand a shell for said hub inclosing same cireumferentially, havingcomparatively unyielding spoke-apertures registering with saidfirst-mentioned apertures.

Theinvention further consists of ahub made of wood and the likehighly-porous material having spoke-holes of smaller dimensions than thesocket ends of the spokes and a metallic shell encirclingall of said hubbetween its ends, said shell having projecting hub-sockets of largercapacity than said spoke-holes.'

The invention further consists in a hub hav- 1ng an inner porous orwooden portion adapted to firmly hold spokes wedged thereinto againstwithdrawal therefrom and an outer shell of metal provided withspoke-sockets supporting said spokes laterally; and the inventionfurther consists in the novel details of construction and combinationsof parts hereinafter fully described in detail, illustrated in thedrawings,.and incorporated in the claims. I

In the drawings, Figure 1 is a partly-sectional view of a hub embodyingmy invention. Fig. 2 is an end view of the hub with fragments of spokesinserted therein. Figs.

3 and 4 represent, respectively, the two sections of the outer metallicshell. Fig. 5 is a lview of the inner or wooden portion of the rub.

Referring to the drawings, 2 represents an ordinary wooden hub with thespoke-holes 3 shown arranged in staggered order.

4 is the outer metallic shell, composed of the spoke-socket portion 5and its complemental portion 6. The socket piece or portion 5 is shownas provided with a series of projecting hopper-like sockets orspoke-aper tures 7 enlarged outwardly and registering when placed overthe hub 2 with its spokeholes 3. The larger part of the portion 5 isprovided with a reduced ring 8, fitting into the large end 8 of themember 6. Small screw-holes 9 and 10 in the portions 5 and 6,respectively, adapted to register with each other, provide means forfastening the metal portions to each other and to the wooden portion 2by means of screws 11, as clearly shown in Fig. 1. The spoke-holes 3 areconsiderably smaller than the sockets 7, and the latter are designed toaccommodate the spokes unreduced dimensions outside of the socket endsfitting into the spoke-holes 3, thereby obtaining a maximum of strengthwhere the greatest lateral strains are imposed. When the spokes arewedged into the apertures or spokeholes 3, the latter being in the woodportion will expand in the usual manner and hold the spokes firmlyagainst withdrawal, while the projecting metal sockets support thespokes rigidly against lateral movement. The shell 4 also protects thewooden hub against undue expansion when the spokes are driven home,which would cause the hub 2 to burst or split. Said shell is also aprotection against swelling and contraction from the effects of theweather -heat and dampness-the principal causes of destruction of woodenspokes.

I have shown the alternate spokes inclined in intersecting planes forthe purpose of bracing the wheel in both directions laterally. Thisarrangement, however, forms no part of my invention, and same is equallyserviceable in connection with any preferred inclination or relativearrangement of spokes.

It is obvious that the minor details of construction in a hub embodyingmy invention may be varied without departing from the spirit of myinvention, which I therefore do not wishto confine to the specificconstruction'herein shown and described.

Having thus described my invention, I claim as new and desire to secureby Letters Patent" 1. The combination with ahub'made of wood or likematerial, provided with suitable spokeholes,'of two overlapping metallicshells covering the periphery of said hub, one'of said shells beingprovided with raised hub-sockets adapted to register with saidspoke-holes and a flange covered by the other shell.

2. The combination of an ordinary wooden hub having spoke-holestherein,'o'f a metallic shell made in two parts forming an outercovering for said hub, one part of said shell being provided withintegral projecting spokesockets of larger diameter than said spokeholesand a male flange, and the other part of said shell fitting over saidmale flange, said interfitting parts having registering apertures forscrews or the like passing through said parts into the hub.

3. The combination of a hub of porous, compressible material such aswood and the like and .a shell fitting over said hub, said shellconsisting of two interfitting parts, one thereof having integralprojecting spoke-sockets adapted to unyieldingly support the spokesagainst lateral movement and they other part overlapping a portionof'said first-mentioned member. I

4. The'combination of an integral wooden hub having suitable spoke-holestherein, an outer metallic shell for said hub made in two overlappingparts completely inclosing the periphery of said hub, one of said partshaving complete spoke-sockets and a flange and the other part fittinginto said first-mentioned part and means common to said hub and partsfor securing same together.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing wit- Witnesses:

RoB'r. KLoTz, IGNATZ ROSENBERG.

